According to Wikipedia
Salmon is a popular food. Classified as an oily fish,salmon is considered to be healthy due to the fish's high protein, high omega-3 fatty acids, and high vitamin D content.
Now if you are interested in eating healthy food but donβt like salmon or are looking for cheaper alternatives, check out these articles suggesting interesting substitutions such as trout, sardines, cold water fish π and more:
https://www.sharecare.com/health/health-value-of-foods/what-healthy-alternatives-salmon